Theophylline, Ephedrine, Guaifenesin, and Phenobarbital (Systemic)
CategoryDescriptionTheophylline, ephedrine, guaifenesin, and phenobarbital
(fee-noe-BAR-bi-tal)
combination is used to treat the symptoms of bronchial asthma, chronic bronchitis,
emphysema, and other lung diseases. This medicine relieves cough, wheezing,
shortness of breath, and troubled breathing. It works by opening up the bronchial
tubes (air passages) of the lungs and increasing the flow of air through them.
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